When printing, I usually print on both sides of the paper
whenever possible, or recycle the paper, e.g. print on the back
page of used paper when printing not-so-impt documents, or drafts,
but that’s bec I have my a printer next to me, so it’s easy for me
to flip the paper over. For colleagues who don’t have a printer
nearby, I realise it may be troublesome for them to try to print on
both sides.